DirectX 12 is an integral part of the Windows 10 and Windows 11 operating systems.
Assuming you have the offline installer folder (from Part 4) or a trusted redistributable package, follow these steps: directx 12 windows 10 64 bit offline installer
For offline computers or systems missing older libraries (like d3dx9_43.dll ), download the following from a machine with internet access: DirectX 12 is an integral part of the
Remember: Microsoft does not provide a simple button labeled "Download DX12 Offline." You must either use the official Redistributable package or create your own via the web installer extraction method. Stick to genuine Microsoft sources, always run DXSETUP.exe as an administrator, and keep that USB backup safe. to begin the installation
to begin the installation. This will add older runtime libraries that are often missing in a fresh Windows 10 install. Update for DX12 Features